Understanding interrelated topics: photosynthesis at age photosynthesis at age14 +

Abstract

Pupils' understanding of ecological, biochemical, physiological and energy change aspects of photosynthesis, and their interrelationships, were investigated in three London secondary schools. Open-ended questions were administered to 74 pupils (14–15-years-old) of fourth year science (biology) classes. Although energy change was poorly understood, many pupils knew the other individual aspects. However, there was little evidence for comprehension of the interrelationship of the various aspects and almost none demonstrated an understanding of photosynthesis as an integrated topic

The implications for teaching photosynthesis are explored in the context of an analysis of selected textbooks and public examination papers.

Keywords:

• Photosynthesis
• Learning
• Secondary school science